Karenna Gore Schiff, the eldest daughter of environmentalist Al and decency watchdog Tipper Gore, has separated from her husband of nearly 13 years, PEOPLE Magazine said Wednesday. The news comes just one week after the former Vice President and his wife announced plans to divorce after 40 years.

An author and New York City attorney, Karenna, 36, and her estranged husband Andrew have three children: Wyatt, 10; Anna, 8; and Oscar, 3.

Tipsters tell PEOPLE the split is mutual, and adds that the couple are working hard to patch up their differences.